Drilling apparatus



March 8, 1932. w.'J. NEWMAN DRILLING APPARATUS Filed Jan. 29. 1927 Patented Ma.r. 8, 1932- P-ATENtoFHcE wILLIAM J.'N-EWMAN, or, cHIciieo, ILLINOIS Q lr autrlnxre rrARa'rUs t ute-anti,emi s r 29, i927. Sa 110,164,510. Y

l This' invention relates to drilling'oifbon m app aratu s which s part1 cularly intended for boring [relatively largehol-es, shafts, or

wells in the ground, such forinstance astlie shafts 'wl'nch 'are sunk in the earth for filling with concrete toprovidefbuildmg foundations.

' The objects t me? invention as to mride new and improved drilling apparatus;

to provide agdrilling or boringapparatus for sinking. relatively ,largeliolle s Eifishafts in the earth"; toprdvide a combined mechanical and hydraulic drilling mechanism; and to provide such other advantages andiimprovements as will be described more fully hereline Hot Figure 3;

Figure 5 is a sectional view taken on the line 5-5'of Figure 1; Figure 6 is an end view of the drill; and Figure 7 is a sectional view taken on the line 7j7 of Figure 1.

In theapparatus as shown inthese draw ings,,8 is a hollow shaft or pipe which may be driven or rotated byany suitable mech anism (not shown) and which is supported on a hanger 9 by means of a swivel joint or connection 10. Water is supplied to the pipe 8 through the feed pipe 11, this water being preferably forced in under sufficient pressure to materially assist, in the excavating as well as in carrying off the excavated or loosened material. A bit 12 is secured to the lower end of the pipe 8 by any suitable means, such as a collar 13; This bit is preferably made tapered and substantially in the form of a bearing bit or drill having two or more cutting edges 14. This drill or point is hollow and is provided with discharge apertures 15 V v H v ing operation, IIprovide pipes or tubes 24 which are preferably arranged adjacent to the point or lower end and on thefront face of the cutting lips, asshown particularly nally on the arms.

-ter head.

in Figure 5, so that the water which is forced therethrough would notonly tend to loosen the earth butwould also serve to flush or "clean the cutting surfaces.

The drill or point 12 serves as acenter or lead member for the main excavating devices whlch aresecured to the pipe 8. Suchexcavating device or cutter head is secured to the pipe'by means of upper and lower clamps or collars" 16 and 17' whiclrare preferably provided with fasteningbolts so that they may be 'adjustably secured to thepipe. The lowercollar has a plurality "of outwardly projecting 211111518 which are rigidly secured "thereto, or which, if desn'ed,may be formed integrally"therewith. These arms are pref- ,erably: 'T-s'haped in section with the stem of'the'fTprojecting rearwardly. Thearms '18'areconnected to the collar 16 by braces 19 cont-al braces 20,

and thesemay be further supported by hori- .The a'rins 18 are provided with plows or excavating devices 21 which are preferably made' so that they maybe adjusted longitudiengage'with the front faces of the arms 18 and which are preferably provided at their upper ends with channels or grooves to take over or engage with the upperedges of the arms and have bolts 23 for holding them in position. While these plows may be arranged in any desired manner and in accordance with the nature of the material to bejexcavated, I have shown an arrange- 'ment in FigureQ which is desirable, as for cutting 'in' earth which may contain holders .or vthe'like. In'this arrangement each arm is provided with a single plow and these are "positioned at different distances from the center so that each plow will cut on a different circle, the outermost plow being ar ranged so that it will make the hole sufiiciently large to provide clearance for the cut- In rdcrto further facilitate the excavatwhich lead from the pipe 8, to points adjacent p These plows comprise lowerfsha'res or cutting portions with upwardly projectingbea'ms or arms 22' which rial within its path.

toward the plows or under or throu h the same in order to facilitate the loosening of the material and the cleaning of the plows. These pipes or tubes are arranged behind the arlns in order to be protected thereby and may be secured to the arms if necessary and may he made adjustable or in sections in order to permit the adjustment of the plows on the arms.

When a hole or shaftis to be sunk the drill point 12 is started and the pipe 8 is rotated by its driving mechanism, and at the same time water is forced in through the pipe 11. The drill point guides and centers the apparatus so that when the plows engage with the earth each plow will operate through a circle and will plow up or loosen the mate- Simultaneously the water flowing through the pipes or tubes 24 tends to break up and loosen and agitate the material so that, as the work proceeds, the loosened earth or material will be carried in suspension in thewater and will be forced up therewith over the top of the wheel where it may be discharged at any convenient point. Qf course, if boulders or stones are encountered which are too large to be discharged in this manner, it may ecome necessary to remove them inany convenient way, as by means of gra ples or the like. From this it will be seen that as the well or hole is filled with the water or water and material suspended therein, the, pressure thereof will tend to support the sides thereof as the work progresses.

From this description it will be readily seen that I provide an improved drilling apparatus and. method of sinking holes which willvbe rapid in operation andwhich will avoid the necessity of a large amount of manual labor ordinarily incident to the digging of wells, foundations, holes, or the like. It willof course be evident that changes may be made in the details of construction, as for instance in the form of the plows or s ecific supporting devices, in order to adapt t e apparatus to diflerent conditions and therefore I do not Wish to be limited to the exact arrangementherein shown and described, except as specified in the following claims, in which I claim:

1. In an apparatus of the character set forth, the combination of a vertical, extensible, rotatable pipe, means for forcing water downwardly through said pipe with sufiicient pressure to assist in excavatlng the material,

forth, the combination of a vertical, extensible, rotatable ipe, means for forcin water downwardly t rough said pipe, a co lar secured to the pipe and having outwardly projecting T-shaped arms, a second collar on the pipe, braces connecting said arms and said last named collar, plows having beams fitting over said arms, means for adjnstably securing the plows to the arms, a center bit at the lower end of the pipe below the plows, saidpipe having outlets leading to points adjacent to the plows and to the center bit.

3. In an apparatus of the character set forth, the combination of a pipe, means for forcing water downwardly through the pipe, a collar secured to the pipe and having outwardly projecting T-shaped arms, a second collar on the ipe, braces connecting said arms with the st named collar, excavating devices having beams fitting over said arms, means for securing said devices to the arms, a combined end cap and center bit secured to the lower end of the pipe below the excavating devices, pipe having outlets leading to oints adjacent to the excavating devices am to the center bit.

' WILLIAM J. NEWMAN.-

a collar securedto the pipe and having outwardly projecting T-shaped arms,a second collaron said pipe, braces connecting said arms andsaid last named collar, plows having beams fitting over the arms, and means for securing the plows to the arms, said pipe having outlets leading to points adjacent the plows. J

. an an apparatus of the character set 

